Toothbrush



FIG. 1 is a rear elevation view of a toothbrush of the present invention.

FIG. 2 is a front elevation view of FIG. 1.

FIG. 3 is a right side elevation view of FIG. 1.

FIG. 4 is a top plan view of FIG. 1; and,

FIG. 5 is a bottom plan view of FIG. 1.

Shown in phantom lines are features that form no part of the claimed design. 

The ornamental design for a toothbrush, as shown and described. 